The additional strengthening of the left front longeron of a kind of automobile
The utility model belongs to field of mechanical technique, relates to a kind of automobile front side member, the additional strengthening of the left front longeron of particularly a kind of automobile.
Along with rapid economic development, living standards of the people are greatly improved, and automobile has entered huge numbers of families as a kind of important vehicle, and people have also had more and more higher demand for the safety performance of automobile.
In general, front rail structure is installed in the both sides of vehicle in the machinery space along the longitudinal in the automobile, supporting driving engine and change-speed box, and provides installing space for it.In the NCAP evaluation test, crew module's rigidity and occupant injury have direct relation, and crew module's rigidity greatly then cabin body is out of shape for a short time in collision, and occupant's injury will correspondingly reduce, and occupant's living space just is guaranteed like this.Front side member and relevant additional strengthening thereof play very large effect in head-on crash, in the existing automobile, because engine room arrangement needs, front side member can change at the diverse location section, cause longeron axial load irrational distribution in the collision, in head-on crash, the longeron distortion is unstable, and flexural deformation has taken place longeron back segment under the situation that leading portion fully is not out of shape.Thereby need improve the deformation pattern of front side member, and make it reach reasonable energy-absorbing effect, left front longeron brace panel structure is optimized.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, proposed a kind of simple in structure, pattern rationally, can guarantee the additional strengthening of the left front longeron of automobile of the absorption of collision energy.
The purpose of this utility model can realize by following technical proposal: the additional strengthening of the left front longeron of a kind of automobile, comprise left front longeron and the brace panel that is fixed on the left front longeron, it is characterized in that the leading portion that described brace panel is fixed in left front longeron also and between the front side member forms cavity.
The technical program is by being fixed on brace panel the leading portion of left front longeron, and forms cavity body structure with it, and this cavity body structure can play the absorption impact load, strengthens the crash-proof performance of left front longeron.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, described left front longeron is the groove shape beam that is shaped on groove structure, and described brace panel is made as the groove shape structure that matches with left front longeron.In the technical program, brace panel can be fixed in the groove structure of left front longeron, left front longeron is played the effect that strengthens intensity.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, connecting portion one that the brace panel of described groove shape comprises respectively and the groove two ends are affixed and connecting portion two, and affixed connecting portion three of bottom portion of groove and groove between constitute the isolation part of cavity.In the technical program, brace panel is by being fixed on its two ends on the left front longeron, and isolation part in the middle of it and left front longeron form a crash-proof cavity.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, the leading portion Joint of the leading portion of described brace panel and left front longeron, the posterior segment Joint of the back segment of described brace panel and front side member.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, be shaped on the welding knock hole on the described brace panel, described brace panel and left front longeron are fixing by welding.Be provided with the welding knock hole in the technical program, the location confirmation when being convenient to the installation of brace panel and left front longeron is to guarantee the correct of position of weld.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, described brace panel and left front longeron are affixed by bolt.By bolted connection, further strengthen the Joint strenght of brace panel and left front longeron in the technical program.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, described brace panel is shaped on the limit wing of undaform.The technical program adopts the limit wing structure of undaform, so that welding.
In the additional strengthening of the above-mentioned left front longeron of a kind of automobile, be shaped on cavity on the described brace panel.By cavity is set, increasing the section at this place, thereby increase its load-carrying capacity in the technical program on brace panel.
Compared with prior art, the utility model is simple in structure, easy for installation, it is optimized left front longeron brace panel structure, by the increase to the change of section structure and overlap joint scope, the data after the optimization have been strengthened the intensity that the bending deformation position takes place longeron, have guaranteed the absorption of the stable and collision energy of longeron distortion in head-on crash, the deformation pattern of longeron is become in collision rationally, ensure passenger's safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A schematic cross-section among Fig. 1.
Among the figure, 1, left front longeron; 11, groove; 111, upper end; 112, bottom; 113, bottom; 2, brace panel; 21, connecting portion one; 22, connecting portion two; 23, connecting portion three; 24, isolation part; 25, cavity; 26, the limit wing; 3, knock hole; 4, cavity; 5, through hole one; 6, through hole two.
The specific embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
With reference to accompanying drawing, present embodiment is the brace panel structure that is installed on the left front longeron, and this brace panel structure is fixed between the leading portion and posterior segment of left front longeron.
With reference to Fig. 2, in the present embodiment, left front longeron 1 is one to have the beam texture of groove 11 from front to back, brace panel 2 has groove shape structure with matching, its groove shape structure comprises respectively with the affixed connecting portion 1 in groove 11 two ends and connecting portion 2 22, with the affixed connecting portion 3 23 in groove 11 bottoms, constitutes the isolation part 24 of cavity 4 at interval with groove 11, cavity 4 in the present embodiment is crashproof cavity, can play the effect of bearing impact load, to guarantee the absorption of the stable and collision energy of longeron distortion in the head-on crash.
With reference to Fig. 1, in the present embodiment, be shaped on two cavitys 25 on the brace panel 2, can further enlarge the spacing between brace panel 2 and the left front longeron 1, improve crashworthiness.Be shaped on welding knock hole 3 on the brace panel 2, so that the calibration of welding time and left front longeron 1 position.Be shaped on through hole 1 and through hole 26 on the brace panel 2, respectively with left front longeron 1 on groove 11 upper ends 111 and the bottom 112 that are shaped on affixed with bolt.The limit wing 26 of brace panel 2 is made as wavy, with groove 11 bottom 113 fixing to weld.
Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as left front longeron 1, groove 11, upper end 11 1, bottom 112, bottom 113, brace panel 2, connecting portion 1, connecting portion 2 22, connecting portion 3 23, isolation part 24, cavity 25, the limit wing 26, knock hole 3, cavity 4, through hole 1, through hole 26 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.